Privacy drives the concern about these databases. People are fearful that information about genetics could be used against them. The very things that make a population good to study also make it tricky.
Should we give away refrigerators? Sure. Trips? Yeah. Fur coats? Who cares. But when we turn the quest for medical care into Queen for a Day, we have gone too far -- ethically. A show that gives out good medicine as a prize is immoral.